2-nitropyridin-3-ol - Names and Identifiers
2-nitropyridin-3-ol - Physico-chemical Properties
Molecular Formula | C5H4N2O3
|
Molar Mass | 140.1 |
Density | 1.507g/cm3 |
Melting Point | 67-72℃ |
Boling Point | 383.2°C at 760 mmHg |
Flash Point | 185.6°C |
Vapor Presure | 2.02E-06mmHg at 25°C |
Appearance | Yellow powder |
Storage Condition | Room Temprature |
Refractive Index | 1.623 |
MDL | MFCD00006258 |
2-nitropyridin-3-ol - Risk and Safety
Hazard Symbols | Xi - Irritant
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Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin.
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Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S37/39 - Wear suitable gloves and eye/face protection
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2-nitropyridin-3-ol - Introduction
3-nitroxy-2-nitropyridine, the chemical formula C5H4N2O3, is also known as HNPA (2-nitro-3-hydroxy-4-picolinic acid).
Nature:
1. Appearance: 3-Hydroxy-2-nitropyridine is colorless to light yellow crystal.
2. Melting Point: about 160-162 ℃.
3. Solubility: 3-Hydroxy-2-nitropyridine is slightly soluble in water and has better solubility in organic solvents such as alcohols and ethers.
Use:
1. Chemical synthesis: 3-Hydroxy-2-nitropyridine can be used as an intermediate in organic synthesis and used in the synthesis of other compounds.
2. Drug research: Because 3-Hydroxy-2-nitropyridine has certain biological activity, it can be used for drug research and development.
Method:
The synthesis method of 3-Hydroxy-2-nitropyridine is relatively simple and can usually be prepared by Nitro reaction. A commonly used method is the reaction of 2-picolinic acid with nitric acid, catalyzed by concentrated sulfuric acid, to yield 3-Hydroxy-2-nitropyridine.
Safety Information:
1. 3-Hydroxy-2-nitropyridine is irritating to skin and eyes, avoid direct contact.
2. During operation and storage, care should be taken to avoid contact with strong oxidants and combustibles to prevent fire or explosion.
3. Use to wear appropriate protective gloves and mask, to ensure that the operation in a well-ventilated area.
Last Update:2024-04-09 02:00:42